Automatically managing network addresses in a managed access environment is described. The taking optical system comprises a field direction turning member 1P, 2P, a positive first group and a negative second group. The first video device transmits a video stream through the video output port. The fluid delivery element is moved to scan the fluid stream over the wall to remove a volume of tissue surrounding the lumen. In general, said mixing conditions include high shear conditions sufficient to convert polymer A to dispersed particles coated with polymer B and produce a free-flowing powder blend. Metal aminoboranes can be included in a kit.